Occurrence of Fusarium Wilt on Canola Caused by Fusarium oxysporum f. sp. conglutinans in Argentina.

摘要: Canola (Brassica napus) is a developing oleaginous crop grown commercially in Argentina, primarily the southeastern region of Buenos Aires Province. Since 2002, plants exhibiting symptoms wilt and xylem discoloration were observed canola experimental field plots located at University Aires, Argentina. Average disease incidence 5- to 6-month-old cultivars developed different countries was 18% (range = 9 27%). Disease that included yellowing, wilting, stunting, necrosis leaf tissue suppressed root development appeared irregular-shaped patches following rows plants. The first symptom yellowing followed by an irregular, brown margins. Lesions coalesced form large necrotic areas led severe defoliation beginning with lower leaves. As developed, pale girdled stems progressed from basal tissues apex. Affected plants...